The BGP Instability Report

The BGP Instability Report is updated daily. This report
was generated on 21 August 2008 02:08 (UTC+1000)

50 Most active ASes for the past 31 days

RANK	ASN	UPDs	%	Prefixes	UPDs/Prefix	AS NAME
1	1803	98117	1.63%	1289	76.12	ICMNET-5 - Sprint
2	9583	88312	1.46%	1249	70.71	SIFY-AS-IN Sify Limited
3	5691	75077	1.24%	13	5775.15	MITRE-AS-5 - The MITRE Corporation
4	8151	72027	1.19%	2162	33.31	Uninet S.A. de C.V.
5	9051	67426	1.12%	156	432.22	IDM Autonomous System
6	4538	52368	0.87%	5018	10.44	ERX-CERNET-BKB China Education and Research Network Center
7	10396	50933	0.84%	50	1018.66	COQUI-NET - DATACOM CARIBE, INC.
8	4766	49512	0.82%	894	55.38	KIXS-AS-KR Korea Telecom
9	6298	49243	0.82%	2118	23.25	COX-PHX - Cox Communications Inc.
10	33783	48528	0.80%	165	294.11	EEPAD
11	17488	46540	0.77%	1403	33.17	HATHWAY-NET-AP Hathway IP Over Cable Internet
12	8866	35105	0.58%	321	109.36	BTC-AS Bulgarian Telecommunication Company Plc.
13	17974	34738	0.58%	749	46.38	TELKOMNET-AS2-AP PT Telekomunikasi Indonesia
14	9299	34602	0.57%	1283	26.97	IPG-AS-AP Philippine Long Distance Telephone Company
15	9929	34171	0.57%	309	110.59	CNCNET-CN China Netcom Corp.
16	14522	33881	0.56%	205	165.27	Satnet
17	3464	32375	0.54%	371	87.26	ASC-NET - Alabama Supercomputer Network
18	6389	29354	0.49%	3259	9.01	BELLSOUTH-NET-BLK - BellSouth.net Inc.
19	18231	28187	0.47%	247	114.12	EXATT-AS-AP IOL NETCOM LTD
20	47467	26575	0.44%	2	13287.50	GRIFFEL Griffel AB
21	28194	26279	0.44%	8	3284.88
22	27839	25649	0.43%	39	657.67	Comteco Ltda
23	7228	24828	0.41%	202	122.91	AS-PAETEC-NET - PaeTec Communications, Inc.
24	209	24624	0.41%	4725	5.21	ASN-QWEST - Qwest
25	30969	24568	0.41%	11	2233.45	TAN-NET TransAfrica Networks
26	5056	23271	0.39%	123	189.20	INS-NET-2 - Iowa Network Services
27	702	22733	0.38%	548	41.48	AS702 Verizon Business EMEA - Commercial IP service provider in Europe
28	16473	22674	0.38%	234	96.90	TNII - Bell South
29	14846	21911	0.36%	44	497.98	CGNOGE - NBC Internet
30	23966	20680	0.34%	336	61.55	LDN-AS-AP LINKdotNET Telecom Limited
31	5237	19165	0.32%	33	580.76	DODNIC - DoD Network Information Center
32	9498	18974	0.31%	711	26.69	BBIL-AP BHARTI Airtel Ltd.
33	5803	18888	0.31%	210	89.94	DDN-ASNBLK - DoD Network Information Center
34	1295	18873	0.31%	39	483.92	BGNOGE - General Electric Company
35	11492	18872	0.31%	1226	15.39	CABLEONE - CABLE ONE
36	12654	18785	0.31%	40	469.62	RIPE-NCC-RIS-AS RIPE NCC RIS project
37	23082	18412	0.31%	5	3682.40	MPHI - Michigan Public Health Institute
38	7018	18390	0.30%	1477	12.45	ATT-INTERNET4 - AT&T WorldNet Services
39	9155	18122	0.30%	266	68.13	QualityNet AS number
40	9829	17731	0.29%	815	21.76	BSNL-NIB National Internet Backbone
41	6458	17642	0.29%	239	73.82	Telgua
42	7738	17273	0.29%	267	64.69	Telecomunicacoes da Bahia S.A.
43	25620	17023	0.28%	65	261.89	COTAS LTDA.
44	10620	16954	0.28%	415	40.85	TV Cable S.A.
45	20115	16534	0.27%	1122	14.74	CHARTER-NET-HKY-NC - Charter Communications
46	680	16490	0.27%	275	59.96	DFN-IP service G-WiN
47	3921	15985	0.27%	34	470.15	AGNOGE - General Electric Company
48	33776	15752	0.26%	119	132.37	STARCOMMS-ASN
49	31567	15743	0.26%	10	1574.30	AKSORAN Aksoran LCC
50	2386	15298	0.25%	1608	9.51	INS-AS - AT&T Data Communications Services
Total		1575194	26.10%

50 Most active ASes for the past 31 days

RANK	ASN	UPDs/Prefix	%	Prefixes	UPDs	AS NAME
1	47467	13287.5	0.44%	2	26575	GRIFFEL Griffel AB
2	5691	6825.2	1.24%	13	75077	MITRE-AS-5 - The MITRE Corporation
3	29910	6784.0	0.11%	1	6784	IACP - INTL. ASSN OF CHIEF OF POLICEI
4	14593	6047.0	0.10%	1	6047	BRAND-INSTITUTE - Brand Instiute, Inc.
5	27245	5680.5	0.19%	2	11361	HEIDRICK-CHICAGO - HEIDRICK
6	40627	3742.0	0.12%	2	7484	RC-COLO1 - RingCentral Inc
7	23082	3682.4	0.31%	5	18412	MPHI - Michigan Public Health Institute
8	28194	3284.9	0.44%	8	26279
9	39105	2386.0	0.04%	1	2386	CLASS-AS SC Class Computers And Service SRL
10	30929	2313.0	0.04%	1	2313	HUTCB Hidrotechnical Faculty - Technical University
11	22678	2259.0	0.04%	1	2259	OSDE
12	30969	2233.5	0.41%	11	24568	TAN-NET TransAfrica Networks
13	39748	2127.0	0.04%	1	2127	VITAS VITAS LLC
14	28361	1926.0	0.03%	1	1926
15	39794	1777.0	0.03%	1	1777	EL-KOZIENICE-AS Elektrownia Kozienice S.A.
16	23917	1746.0	0.03%	1	1746	BRIBIE-NET-AS-AP Bribie Island Net Multihomed, Brisbane
17	28542	1735.0	0.03%	1	1735	Gobierno del Estado de Coahuila
18	11268	1720.0	0.03%	1	1720	WNM-ORG - Walls New Media
19	5382	1710.0	0.03%	1	1710	TELESYSTEM-NET Planet Service Srl
20	39244	1653.0	0.03%	1	1653	TEQNOBASE-AS Teqnobase AS
21	42795	1600.0	0.03%	1	1600	XEROX-GENERAL-AS Xerox General Services
22	31567	1574.3	0.26%	10	15743	AKSORAN Aksoran LCC
23	42380	1494.0	0.02%	1	1494	ERGOLT-AS ERGO LIETUVA UADB
24	31856	1487.8	0.10%	4	5951	CABSAS
25	35385	1261.0	0.02%	1	1261	QOU Alquds Open University
26	38717	1258.1	0.17%	8	10065	TATI-AS-AP Top Amusement Technology International Corp. (for BGP GRE)
27	47348	1252.0	0.02%	1	1252	PEACE_GLOBAL Peace Global Satellite Communications Limited
28	26276	1240.6	0.10%	5	6203	TIMKEN-USA - The Timken Company
29	9747	1178.3	0.18%	9	10605	EZINTERNET-AS-AP EZInternet Pty Ltd
30	17270	1149.0	0.02%	1	1149	SFI-CFCC - Systems of the Future, Inc.
31	42362	1147.1	0.17%	9	10324	ALANIA-AS Sevosetinelectrosvyaz
32	12046	1114.0	0.09%	5	5570	ASN-CSC-UOM Computing Services Centre
33	46302	1021.0	0.03%	2	2042	CINQUIX - Cinquix Networks
34	10396	1018.7	0.84%	50	50933	COQUI-NET - DATACOM CARIBE, INC.
35	22266	998.0	0.03%	2	1996	KNIGHT-INC - KNIGHT TRANSPORTATION
36	5801	984.2	0.07%	4	3937	DDN-ASNBLK - DoD Network Information Center
37	24992	926.3	0.05%	3	2779	DIC-AS DIC Online Wolf & Co. KG
38	45016	916.0	0.02%	1	916	WKOKS-ASN Weglokoks S.A.
39	33290	899.8	0.06%	4	3599	BROADVOICE-DCA - Broadvoice, Inc.
40	6337	896.5	0.15%	10	8965	HIWAAY - HIWAAY INFORMATION SERVICES, INC.
41	13392	883.0	0.01%	1	883	R18ESC - Region 18 Education Service Center
42	25156	863.0	0.01%	1	863	INRETE-AS INRETE S.r.l.
43	23348	850.0	0.11%	8	6800	EQT - Equatorial Research & Marketing Corp.
44	31462	846.0	0.03%	2	1692	ABSOLUTBANK-AS AKB "Absolut Bank" (ZAO)
45	5745	844.0	0.01%	1	844	Organizacion Panamericana de la Salud
46	25250	824.3	0.04%	3	2473	GAMTEL-AS
47	43908	810.0	0.01%	1	810	PSV-AS JSC Pursvyaz AS
48	21578	767.0	0.03%	2	1534	Universidad autonoma de Bucaramanga
49	3944	766.2	0.05%	4	3065	PARTAN-LAB - Partan & Partan
50	43025	742.0	0.01%
Total		104531.2	6.47%

50 Most active Prefixes for the past 31 days

RANK	PREFIX	UPDs	%	Origin AS -- AS NAME
1	192.12.120.0/24	74947	1.15%	5691 -- MITRE-AS-5 - The MITRE Corporation
2	194.126.143.0/24	61885	0.95%	9051 -- IDM Autonomous System
3	221.134.222.0/24	61484	0.94%	9583 -- SIFY-AS-IN Sify Limited
4	83.228.71.0/24	28022	0.43%	8866 -- BTC-AS Bulgarian Telecommunication Company Plc.
5	221.128.192.0/18	25313	0.39%	18231 -- EXATT-AS-AP IOL NETCOM LTD
6	72.50.96.0/20	24289	0.37%	10396 -- COQUI-NET - DATACOM CARIBE, INC.
7	196.42.0.0/20	14680	0.23%	10396 -- COQUI-NET - DATACOM CARIBE, INC.
8	62.182.216.0/21	13297	0.20%	35706 -- NAO Net at Once 47467 -- GRIFFEL Griffel AB
9	91.203.160.0/22	13288	0.20%	35706 -- NAO Net at Once 47467 -- GRIFFEL Griffel AB
10	196.27.104.0/21	12201	0.19%	30969 -- TAN-NET TransAfrica Networks 8668 -- TELONE-AS TelOne Zimbabwe P/L
11	196.27.108.0/22	11964	0.18%	30969 -- TAN-NET TransAfrica Networks
12	203.63.26.0/24	10594	0.16%	9747 -- EZINTERNET-AS-AP EZInternet Pty Ltd
13	63.84.91.0/24	10480	0.16%	27245 -- HEIDRICK-CHICAGO - HEIDRICK
14	89.38.98.0/23	10091	0.16%	6663 -- EUROWEBRO Euroweb Romania SA
15	83.239.192.0/21	9957	0.15%	42362 -- ALANIA-AS Sevosetinelectrosvyaz
16	202.150.80.0/20	8757	0.13%	9251 -- SPEEDNET-AP PT Speed Internet Digital
17	202.52.245.0/24	8415	0.13%	4613 -- MOS-NP Mercantile Office Systems
18	205.106.88.0/22	7151	0.11%	5237 -- DODNIC - DoD Network Information Center
19	203.202.140.128/27	6996	0.11%	7474 -- OPTUSCOM-AS01-AU SingTel Optus Pty Ltd
20	148.208.211.0/24	6970	0.11%	8151 -- Uninet S.A. de C.V.
21	63.239.134.0/24	6784	0.10%	29910 -- IACP - INTL. ASSN OF CHIEF OF POLICEI
22	189.90.80.0/20	6723	0.10%	28194 --
23	189.90.95.0/24	6610	0.10%	28194 --
24	216.255.56.0/21	6516	0.10%	7106 -- OHIOBRIGHTNET - Com Net, Inc.
25	84.240.198.0/24	6479	0.10%	31567 -- AKSORAN Aksoran LCC
26	189.90.80.0/24	6424	0.10%	28194 --
27	189.90.88.0/24	6342	0.10%	28194 --
28	195.251.5.0/24	6334	0.10%	5408 -- GR-NET Greek Research & Technology Network, http://www.grnet.gr
29	147.185.176.0/20	6188	0.10%	26276 -- TIMKEN-USA - The Timken Company
30	208.83.119.0/24	6054	0.09%	23082 -- MPHI - Michigan Public Health Institute
31	208.83.117.0/24	6052	0.09%	23082 -- MPHI - Michigan Public Health Institute
32	208.83.118.0/24	6051	0.09%	23082 -- MPHI - Michigan Public Health Institute
33	12.8.7.0/24	6047	0.09%	14593 -- BRAND-INSTITUTE - Brand Instiute, Inc.
34	205.162.132.0/23	5949	0.09%	23541 -- Scarlet B.V.
35	84.240.195.0/24	5855	0.09%	31567 -- AKSORAN Aksoran LCC
36	125.23.208.0/20	5839	0.09%	24560 -- AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., Telemedia Services
37	148.243.225.0/27	5830	0.09%	6503 -- Avantel, S.A.
38	203.101.87.0/24	5777	0.09%	9498 -- BBIL-AP BHARTI Airtel Ltd.
39	193.188.42.0/24	5542	0.09%	12046 -- ASN-CSC-UOM Computing Services Centre
40	196.44.176.0/20	5540	0.09%	31856 -- CABSAS
41	64.84.104.0/24	5178	0.08%	32183 -- WINBEAM-AS-1 - Winbeam
42	203.175.127.0/24	4413	0.07%	38717 -- TATI-AS-AP Top Amusement Technology International Corp. (for BGP GRE)
43	202.92.235.0/24	4230	0.06%	9498 -- BBIL-AP BHARTI Airtel Ltd.
44	64.84.99.0/24	4193	0.06%	32183 -- WINBEAM-AS-1 - Winbeam
45	195.96.69.0/24	4163	0.06%	8225 -- ASTELIT-MSK-AS Astelit Autonomous System
46	41.223.133.0/24	4005	0.06%	23348 -- EQT - Equatorial Research & Marketing Corp. 36988 -- MILLICOM-SL
47	41.223.132.0/24	3996	0.06%	23348 -- EQT - Equatorial Research & Marketing Corp. 36988 -- MILLICOM-SL
48	140.218.128.0/24	3952	0.06%	145 -- VBNS - MCI Communications Corporation
49	208.87.40.0/24	3824	0.06%	40627 -- RC-COLO1 - RingCentral Inc
50	89.4.131.0/24	3747	0.06%	24731 -- ASN-NESMA National Engineering Services and Marketing Company Ltd. (NESMA)
Total		585418	8.97%

31 Day BGP Profile: 21-July-2008 00:00 - 20-August-2008 23:59 (UTC+1000)

Number of BGP Update Messages:	4273960
Number of Prefix Updates:	6031007
Number of Prefix Withdrawals:	476881
Average Prefixes per BGP Update:	1.52
Average BGP Update Messages per second:	1.55
Average Prefix Updates per second:	2.35
Peak BGP Update Message Rate per second:	2799	(05:29:58 Sat, 26-Jul-2008)
Peak Prefix Update Rate per second:	3207	(18:36:01 Tue, 5-Aug-2008)
Peak Prefix Withdraw Rate per second:	11239	(15:13:52 Thu, 31-Jul-2008)
Prefix Count:	303967
Updated Prefix Count:	301563
Stable Prefix Count:	2404
Origin AS Count:	29378
Updated Origin AS Count:	29227
Stable Origin AS Count:	151
Unique Path Count:	448407
Updated Path Count:	392509
Stable Path Count:	55898

Hourly Average of Per-Second Updated and Withdrawn Prefix Rate

Hourly Peak of Per-Second Updated and Withdrawn Prefix Rate

Hourly Average Per-Second Updated Prefix Rate by Update Type

Hourly Peak of Per-Second Updated Prefix Rate by Update Type

BGP Table Activity

Cumulative Distribution of per-Prefix and per-AS Updates

Notes

The data has been gathered using a single eBGP peering with AS 2.0. The observations of BGP path change are relative to this observation point. The updates are generated by a Quagga BGP implementation providing a timestamped log of incoming update messages. The timezone of this monitoring point is UTC+1000. Updates are processed on a 24 hour cycle.